论文部分内容阅读
设计实现了一种基于CPLD和线阵CCD的三维自准直小角度传感器,采用七支620nm波长的LED组成的面光源,光通过乳白毛玻璃为分划板提供照明;并运用改进的测量算法,准确地算出偏转的角度。可极大地减少传感器光学部分的调试工作量,提高精度,降低成本。实验证明,在绕X、Y、Z轴转动±1°的范围内,静态误差优于40″;在不超过20°/s的转速下,动态误差不大于3′。
A three-dimensional self-collimating small-angle sensor based on CPLD and linear array CCD is designed and implemented. The surface light source consists of seven LEDs with wavelength of 620nm. The light illuminates the reticle through opal glass. By using the improved measurement algorithm, Accurately calculate the angle of deflection. It can greatly reduce the debugging workload of the optical part of the sensor, improve the precision and reduce the cost. The experimental results show that the static error is better than 40 "in the range of ± 1 ° around X, Y and Z axes and no more than 3 ’at no more than 20 ° / s.